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137 lines
4.4 KiB
137 lines
4.4 KiB
/************************************************************************ |
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* sched/pthread_detach.c |
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* |
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* Copyright (C) 2007, 2009 Gregory Nutt. All rights reserved. |
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* Author: Gregory Nutt <gnutt@nuttx.org> |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* 3. Neither the name NuttX nor the names of its contributors may be |
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* used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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* |
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************************************************************************/ |
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/************************************************************************ |
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* Included Files |
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************************************************************************/ |
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#include <nuttx/config.h> |
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#include <sys/types.h> |
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#include <stdbool.h> |
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#include <pthread.h> |
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#include <errno.h> |
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#include <debug.h> |
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#include "os_internal.h" |
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#include "pthread_internal.h" |
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/************************************************************************ |
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* Pre-processor Definitions |
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************************************************************************/ |
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/************************************************************************ |
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* Private Type Declarations |
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************************************************************************/ |
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/************************************************************************ |
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* Global Variables |
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************************************************************************/ |
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/************************************************************************ |
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* Private Variables |
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************************************************************************/ |
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/************************************************************************ |
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* Private Functions |
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************************************************************************/ |
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/************************************************************************ |
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* Public Functions |
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************************************************************************/ |
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/************************************************************************ |
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* Name: pthread_detach |
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* |
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* Description: |
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* A thread object may be "detached" to specify that the return value |
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* and completion status will not be requested. |
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* |
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* Parameters: |
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* thread |
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* |
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* Return Value: |
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* 0 if successful. Otherwise, an error code. |
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* |
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* Assumptions: |
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* |
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************************************************************************/ |
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int pthread_detach(pthread_t thread) |
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{ |
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FAR join_t *pjoin; |
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int ret; |
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sdbg("Thread=%d\n", thread); |
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/* Find the entry associated with this pthread. */ |
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(void)pthread_takesemaphore(&g_join_semaphore); |
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pjoin = pthread_findjoininfo((pid_t)thread); |
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if (!pjoin) |
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{ |
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sdbg("Could not find thread entry\n"); |
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ret = EINVAL; |
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} |
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else |
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{ |
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/* Has the thread already terminated? */ |
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if (pjoin->terminated) |
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{ |
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/* YES.. just remove the thread entry. */ |
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pthread_destroyjoin(pjoin); |
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} |
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else |
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{ |
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/* NO.. Just mark the thread as detached. It |
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* will be removed and deallocated when the |
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* thread exits |
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*/ |
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pjoin->detached = true; |
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} |
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/* Either case is successful */ |
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ret = OK; |
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} |
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(void)pthread_givesemaphore(&g_join_semaphore); |
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sdbg("Returning %d\n", ret); |
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return ret; |
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}
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